JPH0259084B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electric movable shelf in which a plurality of shelves are arranged movably by electric power.

(Prior Art) A multi-aisle motorized multi-aisle system in which multiple shelves are movably arranged by electric power, and by moving any shelf, passages can be formed between any shelves and at any number of locations. Type movable shelves are known. For example, as shown in FIG. 6, one fixed shelf 1 has multiple movable shelves 2, 3, 4, 5, 6 on one side.
The shelves are movable by electric power and all the shelves are lined up so that they can be focused, and any shelf can be moved to form a passage between each shelf, and the passage that should be formed between each shelf can be formed. 21, 22, 23, 2 respectively
4, 25, and 26, an arbitrary plurality of passages 21, 24, and 25 can be formed, as in the example shown in FIG. 6, for example.

(Problems to be Solved by the Invention) According to the conventional multi-aisle electric movable shelf, passages are formed between arbitrary shelves, and after work is completed within this passage, the locking state of the shelving device is released. and issues an open command signal to form a passage between other shelves.
The left and right shelves sandwiching the passage to be formed by this opening command signal move simultaneously to the left and right when there is room for movement to the left and right, respectively, to form a passage between the specified shelves. Therefore, there is no problem when forming the first passage from a state where all the shelves are converged, but
When passages are successively formed at different positions, the width of the already formed passages becomes narrower, and the widths of the passages also become different. For example, as shown in Figure 6,
When the opening command signal is issued to form the passage 23 between the shelves 3 and 4 from the state in which the passages 21, 24, and 25 are formed, the shelves 4 and 4 are opened as shown in FIG. There is no problem if the rack moves to the right and the shelf 3 stops, but with conventional multi-aisle electric movable shelves, there is no room for moving to the left of the movable shelf 3 across the movable shelf 2. Therefore, the movable shelf 3 also moves to the left at the same time as the movable shelf 2 moves, and when the width of the passage 23 reaches a predetermined width, the leftward movement of the shelf 2 and the rightward movement of the shelf 3 are stopped. Therefore, a passage 23 with a predetermined width and passages 24 and 25 narrower than the width of this passage 23 are formed, which causes a problem in that the aesthetic appearance is significantly impaired.
Furthermore, even if a large number of passages are formed, only the passage 23 formed last has the required predetermined width.
Since the widths of the other pre-formed passages 21 and 24 become narrower,
There was a problem that the effect of forming multiple passages was lost.

An object of the present invention is to provide a multi-aisle electric movable shelf in which even when one passage is formed and then successively formed passages at different positions, the widths of the passages formed at a plurality of locations are different, and in particular, the width of the formed passages is different. By eliminating the narrower aisle width, the aesthetic appearance is not compromised.
Another object of the present invention is to provide an electric movable shelf that makes it meaningful to form multiple passages.

(Means for Solving the Problems) The electric movable shelf of the present invention includes a plurality of movable shelves that move in the left-right direction by forward and reverse rotation of a drive motor, and each movable shelf is provided with an open command signal generating means for generating an open command signal for forming a passage between the movable shelves;
A right direction drive circuit and a left direction drive circuit selectively drive the drive motor of each movable shelf in the forward direction or the reverse direction based on the open command signal from the open command signal generating means; Therefore, one of the right direction drive circuit of the shelf located on the right side across the passage to be formed or the left direction drive circuit of the shelf located on the left side of the passage is operated preferentially, and the priority direction is activated. The present invention is characterized in that it has an inversion signal generating circuit that operates a drive circuit in a direction opposite to the priority direction of the shelf located on the opposite side across the passage when there is no margin for shifting.

(Function) When an open command signal is issued by the open command signal generation means provided on each movable shelf, the right direction of the shelf located on the right side across the passage to be formed by the open command signal is One of the drive circuit and the leftward drive circuit of the shelf located on the left side across the passage is activated preferentially. When there is no transition margin in the above priority direction, or even if there is transition margin, when there is no margin after moving by this transition margin, the reversal signal generation circuit is activated and the transition direction is moved to the opposite side across the passage. A drive circuit in a direction opposite to the preferred direction of the shelf in which it is located is activated.

(Example) In FIG. 1, numeral 31 is the main control circuit, 32
is a distributed control circuit; in the electric movable shelves arranged as shown in FIG. 6, the fixed shelf 1 has a main control circuit 31 and a distributed control circuit 32; 4, 5, and 6 are distributed control circuits 32
is provided. Note that a part of the control circuit 32 of the rightmost shelf 6 has a circuit configuration as shown in FIG. In the following explanation, flip-flop circuits are simply expressed as "FF1" and "FF2".
AND circuits are simply expressed as "A1" and "A2", and OR circuits are simply expressed as "O1" and "O".
2", and inverters are simply represented as "IN1" and "IN2".

As shown in FIG. 6, the fixed shelf 1 is provided with a main operation panel 7 and an operation panel 8, and each movable shelf 2, 3, 4, 5, 6 is provided with an operation panel 9, 10, 11, respectively. , 12, 13 are provided.
The main operation panel 7 and operation panels 9, 10,
11, 12, and 13 are each provided with an open command switch as an open command signal generating means for generating an open command signal for forming a passage between the shelf and the adjacent shelf, and the main operation panel Open command signal by operating the open command switch at 7
The OCS is input to FF1 in the main control circuit 31 as shown in FIG.
Opening command signals OCS generated by operating the opening command switches 4, 5, and 6 are inputted to FF2 in the control circuit 32 in each shelf, as shown in FIG. Each mobile shelf 2, 3,
The control circuit 32 at 4, 5, and 6 includes a left limit signal LSL generated by the detection operation of the left limit switch provided on each shelf, a right limit signal LSR generated by the detection operation of the right limit switch, and a passage between adjacent shelves. A path width signal PLS, which is generated when the width reaches a predetermined width, is input. The left limit signal LSL and right limit signal LSR are generated when there is no longer any room for each shelf to move leftward or rightward. In addition, the passage width signal PLS can be obtained by detecting the rotation angle of a swing arm provided between adjacent shelves, or by detecting the amount of movement of a movable shelf by electrical, magnetic, or other means. It can be emitted by

In FIG. 1, the output of the terminal Q of the FF1 is input to the control circuit 32 on the right side as a right row signal RL. On the other hand, the output of the terminal Q of FF2 of the control circuit 32 is output as the right command signal RRL', which is input as the right command signal RRL to the control circuit 32 of the shelf adjacent to the right side, and the output of the terminal Q of FF2 is output as the right command signal RRL'. ，
Input to O4 and A6 via IN6
A6 is input to A6, and is ANDed with the right row signal RL input from the adjacent shelf on the left. The output of A6 is ANDed with the inverted signal of the right limit signal LSR by IN5 at A8, and the output is input to the right direction drive circuit RS. The above limit signal LSR is normally “L”
When the shelf reaches the right limit position, this is detected and becomes "H". However,
The opposite operation can be achieved by changing the combination of inverters. The rightward drive circuit RS drives the drive motor of the shelf in a fixed direction to move the shelf to the right. The output of the terminal of FF2 is inverted at IN7 and then output as the left command signal RLS via O6, and is sent to the control circuit 32 of the shelf adjacent to the left side.
is input as the left command signal RLS′, and the above
The inverted signal from IN7 is input to A7 via O3. Left command signal input from the right mobile shelf
RLS' is inputted to A7 via O3, ANDed with the right limit signal LSR at A5, and the output of A5 is outputted to the left shelf as the left command signal RLS via O6.

an inverted signal of the open command signal OCS by IN2;
The inverted signal of the right command signal RRL from the shelf on the left by IN8 is ANDed by A1. IN2
The inverted signal is also the right row signal from the next shelf on the left.
A4 is ANDed with RL, and its output is input to A10 via O4. O in A10
The output of 4 and the inverted signal of the path width signal PLS from IN3 are ANDed, and the output is the right row signal.
Output as RL′. This right row signal RL' is input as the right row signal RL to the control circuit 32 of the shelf on the right. The inverted signal of the aisle width signal PLS by IN3 is also the left row signal from the shelf on the right at A2.
An AND is taken with LL′. The output of A2 and the output of A1 are ANDed at A3, and the output of A3 is input to A7 via O1. A7 ANDs the output of O1 and O3, and the output is input to A9 and output as a left row signal LL to the shelf next to the left.
The inverted signal of the path width signal PLS by IN3 and the inverted signal of the left limit signal LSL by IN4 are ANDed by A11. The output of A11 and the output of A7 are ANDed at A9, and the output of A9 is input to the left direction drive circuit LS. The left direction drive circuit LS drives the drive motor of the shelf to move the shelf to the left.

A part of the control circuit in the rightmost shelf 6 is constructed as shown by the reference numeral 32A in FIG. 2, and the other point is that the right limit signal LSR is input to both input terminals of A5. This is different from the control circuit 32 of the mobile shelf.

Next, the operation of the above embodiment will be explained with reference to the time charts shown in FIGS. 3 to 5.

Now, if the open command switch is operated on a certain shelf, the control circuit 32 for that shelf will be activated.
The open command signal OCS of FF2 is input, an "H" signal is output from terminal Q of FF2, and this "H" signal is input to A10 via O4. If the passage width between that shelf and the shelf adjacent to the right side is less than the predetermined width, the passage width signal PLS is "L", and A10
Since the inverted signal "H" of the path width signal PLS from IN3 is input to the other input terminal of A1,
The output of 0 becomes "H", and this "H" signal is outputted as the right row signal RL' to the shelf on the right, and is input as the right row signal RL to the control circuit 32 of the shelf on the right. On the shelf to the right of this, there is an open command signal.
OCS is "L", so A4 on that shelf
outputs an "H" signal by ANDing the inverted signal of the open command signal OCS from IN2 and the "H" right row signal RL input from the left neighbor, and this signal is sent to A10 via O4. is input. If the passage between that shelf and the shelf on the right is less than the specified width, A1
Since the "H" signal is input to the other input terminal of A10, the output of A10 becomes "H". In this way, the right row signal RL is serially transmitted to the shelves located to the right of the shelf where the open command switch is operated.

Here, the operation of the shelf to which the right row signal RL is input from the left neighbor will be explained with reference to FIGS. 3 to 5. In FIG. 5, the signals enclosed in parentheses indicate the signals on the shelf where the right row signal RL is input from the left side. Right row signal RL from left side
The open command signal OCS is not output from the shelf itself to which is input, and the output of terminal Q of FF2 is "L".
Its inverted signal by IN6 is "H" as shown in FIG. Therefore, when the right row signal RL is input from the left neighbor, the output of A6 becomes "H" as shown in FIGS. 3 and 5. on the other hand,
If there is room to move to the right of that shelf, the right command signal
LSR is “L” and its inverted output by IN5 is “H”
Therefore, the output of A8, which receives this "H" signal and the output of A6, becomes "H". The "H" signal of A8 drives the right direction drive circuit RS, which drives the drive motor in the forward direction to move the shelf to the right. Such rightward movement is performed on the shelf to which the rightward signal RS is input, and on the condition that there is room for rightward movement. When the passage to be formed reaches a predetermined width in this way, the passage width signal PLS is generated at the shelf where the open command signal OCS was generated, and this signal PLS is inverted to "L" at IN3, so A1
The gate of 0 is closed and the output of the right row signal RL' is stopped. Therefore, the movement of all the shelves is stopped and the passage forming operation is stopped.

Next, the same signal is opened by inputting the open command signal OCS.
When the shelf on the right side of the shelf where the OCS is input is moving to the right, there is no room for movement to the right, and the gap between the shelf where the open command signal OCS is input and the shelf to the right of it Before the passage width reaches the specified width,
A case in which the right limit switch is activated will be explained.

Now, when the shelf on the right side of the shelf to which the open command signal OCS is input moves at the same time, and the rightmost shelf reaches the right limit position and the right limit signal LSR becomes "H", part of the control circuit of the rightmost shelf moves. The output of A5 in FIG. 2 becomes "H", and this "H" signal is transmitted to the adjacent shelf on the left as the left command signal RLS via O6. In the shelf next to the left, the left command signal RLS' input at A5 of the control circuit 32 shown in FIG. 1 and the right limit signal for that shelf are
The AND signal with LSR is taken and an "H" signal is output, which is further outputted to the adjacent shelf on the left as a left command signal RLS via O6. In this way, the left command signal RLS is sequentially transmitted to the left shelves.
Note that if a passage has already been formed between the shelf to which the open command signal was issued and the rightmost shelf, and the open command signal OCS corresponding to this already formed passage remains to be issued, i.e. If a passage has already been formed and the formed passage is locked, the output of the FF2 terminal on the shelf where the latter open command signal OCS is being issued is inverted to "H" at IN7 and input to O6. Therefore, the output of O6 is outputted to the left shelf as the left command signal RLS.

When the left command signal RLS is input to the shelf that issued the open command signal OCS, this left command signal is input to A7 via O3. Since the "H" signal from the Q terminal of FF2 is input to the other input terminal of A7 via O1, the output of A7 becomes "H" and is output as the left row signal LL toward the left shelf. Ru.
On the left shelf, the open command signal OCS is not input,
Also, on the condition that the path width signal PLS is not input, the input left row signal LL' is changed to A2, A3,
The output is further directed to the left shelf via A7. For the shelves to which the left-hand signal LL' is input, A is applied on the condition that the aisle width signal PLS is not input and the left limit signal LSL is not input.
The "H" signal output from A9 and the "H" signal from A7 cause the "H" signal to be output from A9, and this "H" signal causes the leftward drive circuit LS to
is driven, and a drive motor (not shown) is driven in the opposite direction by the leftward drive circuit LS to move the movable shelf to the left. Also, open command signal
Similarly, on the shelf where OCS is input, A7, A
11, the "H" signal output from A9 drives the left direction drive circuit LS, and this shelf also moves to the left.

When the width of the aisle being formed between the shelf to which the open command signal OCS was input and the shelf to the right of it reaches a predetermined width, the aisle width signal PLS is input to the shelf to which the open command signal OCS was input. A1 on that shelf
1, the output of A9 becomes "L" and the movement of the shelf is stopped (see FIG. 4). Also, A2 on the shelf above,
The outputs of A3 and A7 also become "L" and the leftward signal LL
The output stops and the movement of the shelf on the left also stops. Furthermore, if there is no longer a transition margin for each shelf moving to the left before the aisle width signal PLS is input, the left limit signal LSL is input for each shelf and the outputs of A11 and A9 are changed to " L, and the movement of each shelf stops.

As described above, according to the above embodiment, when one open command signal is input, the shelf located on the right side, which is the priority direction, moves to the right side with respect to the shelf to which this open command signal is input. However, if there is no room left for shifting to the right before a passage of a predetermined width is formed, the left command signal RLS is generated by the inversion signal generation circuit comprising A5, O6, FF2, and IN7, and this left Based on the command signal RLS, the shelf on which the open command signal was issued and the shelf on the left side thereof move to the left, so when creating passages one after another in different positions, it is possible to move within the predetermined number of passages. If there is, the width of each passage will always be constant, and there will be no possibility that the width of each passage is different or that the width of a certain passage is too narrow for carrying out work.

In addition, in the illustrated embodiment, priority is given to movement to the right, but priority is given to movement to the left of the shelf on the left side with respect to the shelf to which the open command signal is input, and movement to the left is prioritized. The shelf on the right side may be moved to the right when there is no longer room for movement in that direction. Further, if all the shelves are movable shelves, the control circuit 32 shown in FIG. 1 may be provided for each movable shelf, and there is no need to provide the circuit 31 for fixed shelves.

(Effects of the Invention) According to the present invention, when an open command signal is input to one of the plurality of movable shelves, the shelf located on the right or the shelf located on the left across the passage to be formed opens. It preferentially moves to the right or left, and when there is no more room to move in this preferential direction, a reversal signal causes the shelf located on the opposite side of the passage to be moved in a direction different from the preferential direction. Therefore, the width of the passages formed at multiple locations is constant. Therefore, the aesthetic appearance is not spoiled due to the width of each passage being different. Moreover, the problem that the effect of forming multiple passages is lost because the already formed passages are sandwiched is also solved.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram showing a part of the circuit configuration of the end shelf used with the above embodiment, and Fig. 3 explains the operation of the above embodiment. Timing chart for
FIG. 5 is a timing chart for explaining the operation of the above embodiment, FIG. 5 is a timing chart for explaining the operation of the above embodiment, and FIG.
The figure is a side view showing an example of the external appearance of a multi-aisle electric movable shelf to which the present invention is applied, and FIG. 7 is a side view showing another mode of operation of the same movable shelf. 2, 3, 4, 5, 6...Moving shelf, OCS...Open command signal, RS...Right direction drive circuit, LS...Left direction drive circuit, A5...AND forming part of the inversion signal generation circuit circuit.

Claims (1)

[Claims] 1. A plurality of movable shelves that move in the left-right direction by forward and reverse rotation of a drive motor, and an opening provided on each movable shelf to form a passage between the shelf and the shelf adjacent thereto. an open command signal generation means for issuing a command signal; and an open command signal generation means provided on each movable shelf, which selectively drives its drive motor in the forward or reverse direction for each movable shelf based on the open command signal from the open command signal generation means. A right direction drive circuit and a left direction drive circuit to be driven, and a right direction drive circuit for a shelf located on the right side across the passage to be formed by the above open command signal, or a right direction drive circuit for a shelf located on the left side across the above passage. One of the left direction drive circuits of the shelves is activated preferentially, and when there is no margin for shifting in the priority direction, the drive circuit of the shelf located on the opposite side of the aisle in the direction opposite to the above priority direction is activated. An electric movable shelf comprising a reversal signal generation circuit for causing